The user interface is built to be the central access point for all the major configuration files of both prototypes. As showed in Figure~\ref{fig:configurator}, the main window is divided in four tabs, each one representing a configurable section of the prototype. Each tab contains some buttons that allow to open the configuration files in a text editor. The sections and the configuration files that can be opened, for each tab, are listed as follows:
\begin{itemize}
\item SMILA: contains the main files to configure the SMILA framework. These files include the Listener/Router configuration and the processor properties.
\item UML: includes files to configure the UML crawler, the UML experiments properties (like which weights to assign to the various concepts) and the UML pipeline.
\item WebML: contains files needed to configure the WebML experiments and the WebML pipelines.
\item Solr: contains links to the schema.xml files for each of the experiments as well as a link to the solr.xml file.
\end{itemize}

\begin{figure}[ht]
  \begin{center}
    \includegraphics[width=1.0\textwidth]{./pictures/configurator}
    \caption{Screenshot depicting the SMILA tab of the configurator.}
    \label{fig:configurator}
  \end{center}
\end{figure}

The user can access a brief help text by clicking the ``Info'' button found next to the listed files. A message will popup explaining the purpose of the file (see Figure~\ref{fig:help_text}). This is just meant as a reminder of the functionalities of such file and doesn't substitute the complete documentation.

\begin{figure}[ht]
  \begin{center}
    \includegraphics[width=1.0\textwidth]{./pictures/help_text}
    \caption{Screenshot of the help text of the processor.properties Info button.}
    \label{fig:help_text}
  \end{center}
\end{figure}

Finally, by clicking the ``Open file'' button, the corresponding file will be opened using the text editor of choice. Windows Notepad is used by default, but it can be changed by specifying the path to the executable of another text editor in the user interface's ``configuration.properties'' file.